I looked at your photos carefully and now understand what your sentence means.
The Society For Promoting Christian Knowledge was founded in 1698. It is the oldest Anglican mission group. At first the emphasis was on founding Christian schools. It most widely known today as a publisher of Christian books.
Unfortunately, I have some very disappointing news for you.
Please know my family has collected old Anglican Books of Common Prayer and Anglican Bibles for almost 70 years. I inherited a large collection and have added to it. Additionally, our religion is Anglican - Episcopal.
I have had the book experts at the famous Huntington Library in Los Angeles assess a few items in my Anglican book collection. I have had rare book specialists assess some of my collection. All state that there have been many Bibles and Books of Common Prayer printed with each edition. That makes them less rare and less valuable that most other books printed at the same time. Also, these specialists agree that condition is of very significant importance.
The first substantial books printed were German Bibles in the 1450s (Gutenberg Bible).
William Tyndale of England printed the first English language part of the Bible (New Testament) in 1525.
All the Bibles until about the late 18thC/early 19thC were in an old style English print where an "S" looks like an "F."
Your Anglican Book of Common Prayer is in printed in modern English. Again, unfortunately, it was published sometime in the late 19thC or early 20thC.
Also, unfortunately, it is not in good condition.
All these variables taken into consideration, your Anglican Book of Common Prayer would have an estimated retail value of $50-65.
I truly wish I had better news. I hope you understand I have an extensive knowledge in this area.
In general, a private seller to a dealer, via consignment or at auction can expect 30-50% of estimated retail value.
Insurance replacement values are usually about 10% more than retail values.
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